Update some old Minetest references in docs

doc/developing/README.md

@@ -15,7 +15,7 @@ Notable pages:
 
 ## In this folder
 
-- [docker.md](docker.md): Developing minetestserver with Docker
+- [docker.md](docker.md): Developing luantiserver with Docker
 - [android.md](android.md): Android tips & tricks
 - [os-compatibility.md](os-compatibility.md): OS/library compatibility policy
 - [profiling.md](profiling.md): Profiling instructions

doc/developing/android.md

@@ -26,7 +26,7 @@ adb install -r -d ./app-arm64-v8a-release-unsigned.apk
 In case debug.txt isn't enough (e.g. when debugging a crash), you can get debug
 output using logcat:
 
-`adb logcat -s 'Minetest:*' '*:F'`
+`adb logcat -s Luanti '*:F'`
 
 Note that you can do this even *after* the app has crashed,
 since Android keeps an internal buffer.

doc/developing/profiling.md

@@ -22,12 +22,12 @@ It will give you flamegraphs, per-thread, per-function views and much more.
 
 Attach perf to your running server, press *^C* to stop:
 ```bash
-perf record -z --call-graph dwarf -F 400 -p "$(pidof minetestserver)"
+perf record -z --call-graph dwarf -F 400 -p "$(pidof luantiserver)"
 ```
 
 Collect a copy of the required libraries/executables:
 ```bash
-perf buildid-list | grep -Eo '/[^ ]+(minetestserver|\.so)[^ ]*$' | \
+perf buildid-list | grep -Eo '/[^ ]+(luantiserver|\.so)[^ ]*$' | \
 	tar -cvahf debug.tgz --files-from=- --ignore-failed-read
 ```